my 2018 Thor Chateau sprinter charges my house bank perfectly. On mine there is a relay under the drivers seat and it switches when the starting battery reaches a certain voltage. Which is usually 5-10 seconds after starting the engine. I installed a switch and wiring to jump this manually to charge the starting battery incase the starting battery is dead. once every couple of weeks I switch it on to charge the starting battery from my solar charged house bank.
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2018 Chateau 24FS
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